
Model of the periodic system of de Chancourtois
1925; 1862
1925; 1862
1849
1860s
circa 1868
1822
1831
1857
1820
circa 1855
1857
1858
1860
1857
1855
1857
1857
circa 1855
1857
circa 1858
1850
circa 1860
1857
1857
1860
1857
1857
1860
1857
1857
1800s
1844
1842
circa 1810
1844-1850
1844-1850
circa 1810
1844-1850
1844-1850
circa 1850
1844-02-10
1844-1850
1844-1850
1844-1850
1844-1850
circa 1840
circa 1840
1855-1856
1844
1852
1852